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TOSHIBA
TMP90C840
Port 0 Register
PO
1 P07 1 P06 1 POS 1 P04 1 P03 1 P02 1 POI 1 POO 1 R/W
(FFCOH)
Port 1 Register
PI
1 P17 1 P16 1 PIS 1 P14 1 P 13 1 P 12 1 Pll 1 PIO 1 R/W
(FFCIH)
Port 0/1 Control Register
POICR
1 _ _ _ _
~I~I~RF_O~I~I=R_FT~O~I_I=R_FT_l~I~
__
~1 _E_X_T~~P=l_C~_P_o_c_1
(FFC2H)
W
R
See "3.3.3 Interrupt controller"./
1
1
/
/
/
/
/
/
/
/
1 __
>
Set I/O of Port 0
*
1 0 1 Input
1
1---/----------/
1 1 / Output
/
W
____ >
Set I/O of Port I
W
* /
0 / Input
/
/---/----------/
/ I / Output
/
/ ______ >
Set general-purpose
port/address bus of
Ports I and 2
* /
0 / General- /
/
1
purpose
/
1
1
port
/
1---1----------1
/ I / Address
/
/
/ bus
/
*
indicates initial
value after reset.
Fig. 3.5 (3)
Registers for Ports 0 and I
MPU90-58
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